S32 SDK
FLEXIO UART

Example application showing FlexIO UART driver usage

Application description


The purpose of this demo application is to show you the usage of the FlexIO UART driver found on the S32K144 SoC using S32 SDK API.

Two instances of the FlexIO UART driver are used to echo the data received from host.

Prerequisites


The run the example you will need to have the following items:

  • 1 S32K144 board
  • 1 Power Adapter 12V (if the board can't be powered from the USB)
  • 2 Dupont male to male cable
  • 1 Personal Computer
  • 1 Jlink Lite Debugger (optional, users can use Open SDA)
  • UART to USB converter if it is not included on the target board. (Please consult your boards documentation to check if UART-USB converter is present).

Boards supported


The following boards are supported by this application:

  • S32K144EVB-Q100
  • S32K144-MB

Hardware Wiring


The following connections must be done to for this example application to work:

PIN FUNCTION S32K144EVB-Q100 S32K144-MB
FLEXIO_UART RX (PTA11) J1.2 - J4.4 J9.22 - J20.5
FLEXIO_UART TX (PTA0) J5.7 - J4.2 J9.31 - J20.2
Note
The application uses on board USB - UART chips to transfer data from board to host PC

How to run


1. Importing the project into the workspace

After opening S32 Design Studio, go to File -> New S32DS Project From... and select flexio_uart_s32k144. Then click on Finish.
The project should now be copied into you current workspace.

2. Generating the Processor Expert configuration

First go to Project Explorer View in S32 DS and select the current project(flexio_uart_s32k144). Then go to Project and click on Generate Processor Expert Code
Wait for the code generation to be completed before continuing to the next step.

3. Building the project

Select the configuration to be built FLASH (Debug_FLASH) or RAM (Debug_RAM) by left clicking on the downward arrow corresponding to the build button(. Wait for the build action to be completed before continuing to the next step.

4. Debugging the project

Go to Run and select Debug Configurations. There will be four debug configurations for this project:

Configuration Name Description
flexio_uart_s32k144 Debug_RAM Jlink Debug the RAM configuration using Segger Jlink debuggers
flexio_uart_s32k144 Debug_FLASH Jlink Debug the FLASH configuration using Segger Jlink debuggers
flexio_uart_s32k144 Debug_RAM PEMicro Debug the RAM configuration using PEMicro debuggers
flexio_uart_s32k144 Debug_FLASH PEMicro Debug the FLASH configuration using PEMicro debuggers


Select the desired debug configuration and click on Launch. Now the perspective will change to the Debug Perspective.
Use the controls to control the program flow.

Note
For more detailed information related to S32 Design Studio usage please consult the available documentation.

Notes


For this example it is necessary to open a terminal emulator and configure it with:

  • 115200 baud
  • One stop bit
  • No parity
  • No flow control